Define the planning problem
Specify workspace representation (grid, mesh), start/goal states, and which constraints matter (obstacles, kinematics, clearance).
Plan a constrained path. Check feasibility and cost.
Constrained motion planning finds a sequence of robot states that reaches a goal while respecting obstacles, kinematic limits and safety constraints. Real deployments must consider collision geometry, robot dynamics, constraint satisfaction, replanning under sensor noise and latency.
Learning concept · Not a validated service
Constrained motion planning finds a sequence of robot states that reaches a goal while respecting obstacles, kinematic limits and safety constraints. Real deployments must consider collision geometry, robot dynamics, constraint satisfaction, replanning under sensor noise and latency.
A proposed extension: use the planner inside a simulator to generate collision-free trajectories for a differential-drive robot, then validate trajectories in hardware with a human safety supervisor. This starter does not provide hardware integration, kinematic constraints or real sensor input.
Specify workspace representation (grid, mesh), start/goal states, and which constraints matter (obstacles, kinematics, clearance).
Implement a discrete search such as A* on a grid to verify maps and obstacle handling before adding dynamics or optimisations.
Measure path length, clearance and success rate across maps; visualise failure modes like dead-ends and unreachable goals.
Add kinematic constraints, time or velocity bounds and a controller to follow planned waypoints; validate in simulator first.
The supplied starter implements an A* grid planner on a tiny 4x5 map: it locates S and G, expands nodes with a Manhattan heuristic and obstacles '#', then reconstructs and prints a discrete cell path and its length. It does not include kinematic constraints, time or velocity limits, dynamics, ROS integration or simulator traces.
while frontier:
_, current = heapq.heappop(frontier)
if current == goal:
break
for nxt in neighbors(current):
new_cost = cost_so_far[current] + 1
if nxt not in cost_so_far or new_cost < cost_so_far[nxt]:
cost_so_far[nxt] = new_cost
priority = new_cost + heuristic(nxt, goal)
heapq.heappush(frontier, (priority, nxt))This code is a small discrete A* example on a hand-written 4x5 grid. It contains static grid obstacles but no kinematic or dynamic constraints, no collision geometry beyond '#' cells, no sensor or simulator data, and no real-time or safety checks needed for deployment.
A proposed extension: replace the static grid with simulator traces, add kinematic feasibility checks (e.g. turning radius), and produce time-parameterised trajectories that a low-level controller can follow under supervision.
This is a potential application pathway, not a delivered product. The supplied starter does not implement this service or validate it with real users.
Networkers Home runs this topic inside its AI Engineer Course, with placement support and hands-on labs.